David Haines is the third Western captive to be executed on video by ISIS. His family is dealing with an unimaginable tragedy. His brother Mike is speaking out about David's motivation to be an aid worker. Nic Robertson has the latest.

ISIS' videos show horrifying acts of brutality carried out in Syria and Iraq. Those graphic images have many people wondering whether ISIS could launch an attack on U.S. soil. Anderson looked at ISIS' capabilities with CNN Political commentator Peter Beinart and retired Army Lieutenant General Mark Hertling.

The AC360 Later panel takes a closer look at Amazon's newly unveiled plans for drone deliveries. For starters, the Daily Beast's Peter Beinart offers this prediction: "The day we start seeing drones flying all around is the day we see people shooting down those drones."

Rush Limbaugh recently said comments by Pope Francis sounded "pure Marxism." The AC360 Later panel has plenty to say about this. Christiane Amanpour says the pope's remarks reflect "what we all learn in Catholic school" and aren't surprising in the least. Watch the debate.

Many Americans were shocked to see 85-year-old Korean War veteran Merrill Newman reading a scripted confession while held captive in North Korea. Former U.S. Ambassador to the United Nations Bill Richardson calls the situation "bizarre." He goes on to say that while he knows North Korea's previous leaders, this regime is a big "question mark." What will it take to free Newman and fellow American Kenneth Bae?

President Obama's approval ratings have hit a new low. Will that have repercussions for Hillary Clinton if she decides to run for the White House in 2016? The Daily Beast's Peter Beinart says Clinton "would be crazy to put a lot of distance between herself and Barack Obama's policies." Watch what the rest of the panel has to say.

In its first month, just 106,185 people signed up for health coverage under the Affordable Care Act. Fewer than 27,000 did it, using the government's troubled web site. These are not the numbers the Obama Administration hoped to release today. Chief Congressional Correspondent Dana Bash has the latest on what this means for the White House, and the millions of Americans who need to purchase coverage under the law.